Happy birthday, Derek Willis! By Mrs. Tyler Thompson | June 21, 2013 | 10:15am | 14 Let’s all gather round and wish one of our newest Cats a very happy birthday: Derek Willis turns 18 today. Happy birthday, Derek. Your brownies from Ellen Calipari are coming soon, but please remember to return the tupperware. Article written by Mrs. Tyler Thompson No, I will not make you a sandwich, but you can follow me on Twitter @MrsTylerKSR or email me.